02432nas a2200241   4500008004100000022001400041245014400055210006900199260011700268300001200385490000800397520144700405653000801852653003401860653003801894653002601932653003101958653002201989653001102011100002702022700001802049856012302067       2009                        eng d  a0920-586100aRu(II)-Chiral (1R,2S)-(+)-cis-1-amino-2-indanol immobilized over SBA-15 for asymmetric transfer hydrogenation reaction of prochiral ketones0 aRuIIChiral 1R2Scis1amino2indanol immobilized over SBA15 for asym  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbCatalysis Soc India; Petrotech Soc; Indo US Sci & Technol ForumcMAR  a161-1670 v1413 a<p>Mesoporous SBA-15 (Santa Barbara University at California) has been synthesized and functionalized with (4-chloromethyl)phenyltriethoxysilane, there after the surface silanols groups were passivated by dimethoxydimethylsilane (MeO(2)Me(2)Si) [Bz-SBA-15]. Further (1R,2S)-(+)-cis-1-amino-2-indanol [AIL] has been immobilized over functionalized SBA-15 (BzAIL-SBA-15). The heterogeneous catalysts were synthesized by complexation of BzAIL-SBA-15 by [RuCl(2)(benzene)](2) and [RuCl(2)(p-cymene)](2) in 2-propanol at reflux condition designated as Ru-Bn-BzAIL-SBA-15 (Ru-1) and Ru-Cy-BzAIL-SBA-15 (Ru-2). The synthesized materials have been characterized by small angle X-ray diffraction spectroscopy (SAXS), N(2) adsorption-desorption isotherms, Fourier Transformed-Infra-red (FT-IR) spectroscopy, Transmission Electron Microscopy (TEM), intensively Coupled plasma atomic emission spectroscopy (ICP-AES), Diffuse reflectance UV-vis and (13)C CP MAS NMR analysis. Further the synthesized and characterized materials (Ru-1 and Ru-2) have been successfully applied in the asymmetric transfer hydrogenation (ATH) reaction of simple prochiral ketones, which gave a yield of 56% and 18% and enantiomeric excess (ee) values of 62% and 77% for Ru-1 and Ru-2, respectively, after 1 h for acetophenone. The reusability studies showed approximately the same enantiomeric excess value at lower conversions. (c) 2008 Elsevier B.V. All rights reserved.</p>10a(1R10a2S)-(+)-Cis-1-amino-2-indanol10aAsymmetric transfer hydrogenation10aChiral amino alcohols10aMesoporous molecular sieve10aProchiral ketones10aSBA-151 aParambadath, Surendran1 aSingh, A., P.  uhttp://library.ncl.res.in/content/ruii-chiral-1r2s-cis-1-amino-2-indanol-immobilized-over-sba-15-asymmetric-transfer-001968nas a2200217   4500008004100000022001400041245014500055210006900200260000800269300001200277490000700289520120000296653001901496653001801515653002501533653001101558653002001569100001801589700001801607856012501625       2017                        eng d  a1380-222400aSynthesis and characterization of D-2PA-Pd(II)@SBA-15 catalyst via ``click chemistry'': highly active catalyst for Suzuki coupling reactions0 aSynthesis and characterization of D2PAPdIISBA15 catalyst via cli  cAPR  a327-3400 v243 a<p>Copper catalysed cycloaddition reaction between azide and terminal alkyne, called as ``click reaction'', was found to be modular approach for the synthesis of facile, highly efficient and recoverable D-2PA-Pd(II)@SBA-15 catalyst. In efforts to synthesize the catalyst, the cycloaddition reaction between azido-functionalized mesoporous SBA-15 and N,N-dimethyl-2-propynylamine (D-2PA) has been carried out, followed by the complexation with PdCl2. To analyze physiochemical properties of synthesized materials, various characterization techniques such as CHN elemental analysis, X-ray diffraction, solid state C-13 and Si-29 NMR spectra, FT-IR, XPS, SEM, TEM and N-2 sorption analysis, TGA and DTA, UV-Vis spectroscopy have been carried out. The synthesized catalyst, D-2PA-Pd(II)@SBA-15, exhibited excellent catalytic activities with good product yield and high TON towards Suzuki coupling reaction of various aryl halides with phenylboronic acid. The effect of solvent, base and temperature on coupling reactions has also been described. The developed protocol offers recyclability of catalyst for multiple (four) times without any appreciable loss in stability and catalytic reactivity.</p>10aClick reaction10aCycloaddition10amesoporous materials10aSBA-1510aSuzuki coupling1 aPathak, Aruna1 aSingh, A., P.  uhttp://library.ncl.res.in/content/synthesis-and-characterization-d-2pa-pdiisba-15-catalyst-click-chemistry-highly-active